Tripod.



Patented Aug. 29, I899.

D. J. ROBERTS.

TRIPOD (Application filed Nair. 14, 1898.)

- (No Model.)

A FOR/V55 T Noam Farms 00. way

UNITED STATES PATENT OFFICE.

DAVID J. ROBERTS, OF PITTSBURG, PENNSYLVANIA.

TRIPOD.

SPECIFICATION forming part of Letters Patent No. 632,064, dated August29, 1899.

Application filed November 14, 1898. Serial No. 696,352. (No model.)

To all whom it may concern:

Be it known that I, DAVID J. ROBERTS, a citizen of the United States ofAmerica, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inTripods, of which the following is a specification, reference being hadtherein to the accompanying drawings.

My invention relates to certain new and useful improvements in tripods.

My invention particularly relates to constructing a telescopic rod whichcan be used for a tripod as well as for various other purposes.

A further object of my invention is to provide a telescopic rod havingafrictional joint formed on the upper end on each section for securingthe same in the adjacent section in the desired position when extended.

The particular feature of my invention comprises a telescopic rod formedof a series of hollow sections or tubes, the upper end of each sectionhaving a frictional joint formed thereon and the lower end beingsomewhat compressed to prevent the disconnection of the sections whenextended.

My invention finally consists in the novel combination and arrangementof parts hereinafter more fully described, and particularly pointed outin the claims.

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this specification, whereinlike numerals of reference indicate corresponding parts and in which forillustration I have shown my improved telescopic rod as used in atripod.

In the drawings, Figure 1 is a perspective view of my improvedtelescopic rod as set up as a tripod and attached to the supportingplatefor the camera. Fig. 2 is a longitudinal sectional view of my improvedtelescopic rod when extended. Fig. 3 is a longitudinal sectional-view ofmy improved telescopic rod closed. Fig. 4 is a perspective View of thesupporting-plate for the camera, showing means for securing mytelescopic rods in position. Fig. 5 is a side view of thesupporting-plate for the camera, showing the upper section of myimproved telescopic rod in section secured thereto. Fig. 6 is aperspective view of a portion of one of the sections, showing thefrictional joint. Fig. 7 is a perspective view of the lower portion ofone of the sections, showin g the compressed end to prevent thedisconnection of the sections when extended.

Referring to the drawings by reference-numerals, 1 indicates the uppersection of my improved telescopic rod, which is tubular in shape and maybe formed of any suitable metallic material and for illustration isshown connected to the supporting-plate 2 for the camera 3.

The lower end of the section 1 is compressed, as at 4, to prevent thedisconnection of the adjacent section. The section 5 is compressed atits lower end, as at 6, in the same manner as the section 1, and it isenlarged at its upper end, as at 7. This enlarged upper end has a seriesof slits 8 cut therein, thereby forming the frictional joint for holdingthe sections together when extended. The'lower section 9 has its lowerend 10 tapering, as shown, to prevent the slipping of the rod when setup, while the upper end is formed with a frictional joint in the samemanner as section 5. 11 indicatesa stop for arresting the movement ofthe sections of the rods when in a closed position.

12 indicates a series of spring-catches which are secured to theunderneath face of the supporting-plate 2, as at 13, and 14 indicates asecuring-screw for the camera 3.

It will be readily apparent that owing to the arrangement of thefrictional joint on the upper end of the sections when the same areextended to any position this frictional joint will securely hold thesections in a locked position and prevent the slipping thereof.

It will be noted that various changes may be made in the details ofconstruction without departing from the general spirit of my invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. A telescopic rod for tripods and the like comprising a series ofsections each of which is formed with a compressed lower end and each ofwhich except the uppermost sect-ion has an enlarged slitted end adaptedto frictionally engage the adjacent section, substan= tially as hereinshown and described.

gage and form africtional joint with the upper sections of the rods,substantially as described.

In testimony whereof I aflix my signature in the presence of twowitnesses.

DAVID J. ROBERTS.

\Vitnesses:

J OHN NoLAND, H. H. PATTERSON.

